American Thoracic Society Documents 401 Figure 2. Algorithm forinitiating empiric antibi-otic therapy for hospital-acquired pneumonia (HAP),ventilator-associated pneu-monia (VAP), and health-care-associatedpneumonia(HCAP). Figure 2.
One milligram is one thousandth of a gram and one thousand micrograms. A milligram is generally abbreviated as mg. MICROGRAM. One microgram is one millionth of a gram and one thousandth of a milligram. It is usually abbreviated as mcg or ug. Mcg and ug are the same.
The metric system uses the abbreviation mcg to represent micrograms. A microgram is equivalent to a millionth of a gram or a thousandth of a milligram. In the International System of Units measurements, the mcg is one of the smallest frequently used units. To convert milligrams to micrograms, multiply 1,000 by the mass.he metric system uses the abbreviation mcg to represent micrograms. A microgram is equivalent to a millionth of a gram or a thousandth of a milligram. In the International System of Units measurements, the mcg is one of the smallest frequently used units. To convert milligrams to micrograms, multiply 1,000 by the mass.